A5001679053- Avian ecology and behavior
- Ecology and Vegetation Dynamics Studies
- Species Distribution and Climate Change
- Land Use and Ecosystem Services
- Bird parasitology and diseases
- Wildlife Ecology and Conservation
- Plant and animal studies
- Economic and Environmental Valuation
- Conservation, Biodiversity, and Resource Management
- Urban Green Space and Health
- Wildlife-Road Interactions and Conservation
- Viral Infections and Vectors
- Environmental and biological studies
- Forest ecology and management
- Animal Behavior and Reproduction
- Geography and Environmental Studies
- Urban Heat Island Mitigation
- Virology and Viral Diseases
- Mosquito-borne diseases and control
- Sustainable Agricultural Systems Analysis
- Agricultural and Food Sciences
- Vector-borne infectious diseases
- Animal and Plant Science Education
Pontifícia Universidade Católica do Rio Grande do Sul
2015-2024
Globally, agriculture is the greatest source of threat to biodiversity, through both ongoing conversion natural habitat and intensification existing farmland. Land sparing land sharing have been suggested as alternative approaches reconcile this with need for produce food. To examine which approach holds most promise grassland species, we examined how bird population densities changed farm yield (production per unit area) in Campos Brazil Uruguay. We obtained information on biodiversity crop...
Conversion of grasslands into crops is a major factor leading to the decline grassland birds. Cattle ranching represents another disturbance natural grasslands, but may be less detrimental We studied diversity, density, and composition bird species in Brazilian Uruguayan under two different land use types: cattle on seminatural soybean fields with interspersed patches grassland. sites had higher richness (n = 75 species) than 57 species). Most birds showed densities sites, some common...
The ideal free distribution theory predicts that mobile species distribute themselves among habitat patches so as to optimize their fitness. Changes in land use alter the quality of and thereby affect species. Following loss native habitat, specialists are expected move where still remains order survive. Competition for resources remnants should consequently increase. As generalists able other habitats, gradually disappear avoid increasing competition with specialists. Here, we test these...
Background Urbanization will increase in the next decades, causing loss of green areas and bird diversity within cities. There is a lack studies at continental scale analyzing relationship between urban areas, such as parks cemeteries, species richness Neotropical region. Bird diversity-environment relationships cemeteries may be influenced by latitudinal gradients or species-area relationships. However, seasonal variation diversity- environment has not been analyzed Neotropics. Methods...
Grasslands in southeastern South America have been extensively converted to various land uses such as agriculture, threatening regional biodiversity. Active restoration has viewed a management alternative for recovery of degraded areas worldwide, although most studies are conducted forests and none evaluated the effect active grasslands America. From 2015 through 2017 we monitored federally owned tract grassland from beginning active‐restoration process. We compared bird community this area...
Livestock production and the replacement of semi-natural grasslands by crops result in land use changes as consequence some habitat is no longer suitable for all species grassland birds. Although generalist could benefit from such changes, alteration detrimental to populations most sensitive species. In this study, we investigated patterns breeding birds through assessment their presence/absence abundance a landscape composed croplands southern Brazil Uruguay. We sampled 160 100-m radius...
The global decline of biodiversity makes it important to find affordable ways conserve and restore habitats. Restoration is useful for conserving native grasslands, with passive restoration defined as either natural colonization or unassisted recovery. Grasslands in southeastern South America have been transformed into croplands impacted by other human activities. We describe the first assessment a management tool birds Pampa grasslands Brazil. compared bird species richness using...
ABSTRACT: Avian influenza viruses (AIVs), Newcastle disease virus (NDV), West Nile (WNV), adenovirus (AV) and herpesvirus (HV) play an important role in the health of human animal populations. However, knowledge prevalence these wild birds is restricted to some groups (e.g. shorebirds) or regions worldwide. Information on grassland South America, which essential for their conservation, scarce. The objectives present study were evaluate occurrences AIV, NDV, WNV, AV HV first time a bird...
Urban parks and cemeteries constitute hot spots of bird diversity in urban areas. However, the seasonal dynamics their communities have been scarcely explored at large scales. This study aims to analyze drivers assemblage seasonality comparing assemblages during breeding non-breeding seasons Neotropical Region. Since less human disturbance than parks, we expected differences community between habitats. The change species composition was partitioned into turnover nestedness. At scales,...
We compiled the main results of a second diagnosis Brazilian ornithological collections. Our starting point was survey by A. Aleixo and F. Straube, with data up to 2005 published in 2007. Ten years later, 2015, curators or managers from 35 collections birds (out 59) answered 12 questions related status collection they curate. These cover all regions country, many have grown number specimens, especially northeastern Brazil. As verified & most are concentrated southeastern southern Brazil...
Since in general the surrounding landscape influences species diversity and abundance fragments of native vegetation, an amount native-vegetation cover nearby may also positively affect communities restored areas, regardless sizes individual habitat patches. We investigated for first time whether richness, total abundance, density grassland birds restoration sites are influenced by Brazilian Pampa. sampled point counts five most representative area grasslands Brazil. established outer buffer...